SSH Startup failure resolution

VPS is 3 people share rental, do not know who operated what led to SSH failed to start, has been connected to the beginning of the system is not a bad, the back through the VPS terminal Landing to find SSH service is not running, so try to run sshd found the following error:

Starting sshd:

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

@ warning:unprotected PRIVATE KEY file! @

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

Permissions 0777 for '/etc/ssh/ssh_host_rsa_key ' are too open.

It is recommended this your private key files are not accessible by others.

This private key would be ignored.

Bad Permissions:ignore key:/etc/ssh/ssh_host_rsa_key

Could not load host key:/etc/ssh/ssh_host_rsa_key

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

@ warning:unprotected PRIVATE KEY file! @

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

Permissions 0777 for '/etc/ssh/ssh_host_dsa_key ' are too open.

It is recommended this your private key files are not accessible by others.

This private key would be ignored.

Bad Permissions:ignore key:/etc/ssh/ssh_host_dsa_key

Could not load host key:/etc/ssh/ssh_host_dsa_key

Disabling Protocol version 2. Could not load host key

Sshd:no Hostkeys available-exiting.

[FAILED]

Workaround:

#chmod sshd_config Ssh_host_dsa_key Ssh_host_key Ssh_host_rsa_key

#chmod 620 moduli

#chmod 644 Ssh_config ssh_host_dsa_key.pub ssh_host_key.pub ssh_host_rsa_key.pub

#service sshd Start

The following error occurred again:

[Root@bailongjun ssh]# Service sshd restart

stopping sshd: [FAILED]

Starting sshd:/var/empty/sshd must is owned by root and not group or world-writable.

[FAILED]

Login directly on the terminal, the problem appears as follows:

/var/empty/sshd must is owned by root and not group or world-writable.

Problem:

SSH on Linux failed to start

Report/var/empty/sshd must is owned by root and not group or world-writable.

Solution:

First through the physical terminal into Linux, Manual Check ssh found not running

-bash-2.05b#/etc/init.d/sshd Status

SSHD is stopped

The service was manually started and the report permissions error was found.

-bash-2.05b#/etc/init.d/sshd Start

Starting SSHD:/VAR/EMPTY/SSHD must is owned by root and not group or world-writable.

[FAILED]

-bash-2.05b#

Using the Rpm-v command, you can check that the software package for SSH is normal, but a directory is a master error.

-bash-2.05b# rpm-v Openssh-server

S.5 ..... C/etc/ssh/sshd_config

..... U../var/empty/sshd

-bash-2.05b#

After viewing the owner of this directory is not root, so start the SSH error

-bash-2.05b# ls-ld/var/empty/sshd/

D–x–x–x 2 vu00106 root 1024 Feb 2 2005/var/empty/sshd/

-bash-2.05b#

Change to root owner, start successful

-bash-2.05b# Chown root/var/empty/sshd/

-bash-2.05b#/etc/init.d/sshd Start

Starting sshd: [OK]

-bash-2.05b#

Fix this problem.

Alternatively, you can try:

This is a matter of authority.

The following two steps can be taken to resolve

Chown-r root.root/var/empty/sshd

chmod 744/var/empty/sshd

Service sshd Restart

Can solve the above problems.